Best Shampoo to Help Hair Grow for Stronger, Thicker Hair

The best shampoo to help hair grow is one that supports scalp health, reduces buildup, and strengthens follicles with clinically backed ingredients. A well-formulated shampoo to help hair grow uses actives like rosemary oil, biotin, and saw palmetto to improve circulation and minimize DHT – a hormone linked to hair thinning.

These formulas don’t create new follicles but optimize the environment for stronger, thicker strands over time. Choosing a sulfate-free option and using it consistently several times a week helps maintain hydration and visible fullness. 

The following sections explain how these shampoos work, what ingredients to look for, and how to use them for lasting results.

RootMD, founded by hair-restoration specialist Dr. Ross Kopelman, offers science-driven solutions designed to support long-term scalp and hair health. 

Our approach combines dermatologist insight with clinically studied ingredients to help reduce hair shedding and strengthen hair from the root. Understanding how a shampoo to help hair grow works can guide you toward visible, lasting improvement in hair health.

Top 5 Shampoos to Help Hair Grow

Finding the right shampoo to help hair grow depends on ingredient quality, scalp compatibility, and clinical backing. Below are five top-rated options that combine proven actives with gentle, scalp-supportive formulas.

1. RootMD DHT-Blocking Shampoo – Best Overall for Hair Regrowth

RootMD DHT-Blocking Shampoo is developed with dermatologist oversight to promote visible improvement in density and strength. This sulfate-free formula blends rosemary oil, biotin, and saw palmetto to help reduce DHT buildup and encourage thicker, healthier strands. 

Designed for both men and women, it helps support scalp health while maintaining hydration for color-treated hair. Used several times a week, it helps reduce hair shedding and leaves hair noticeably stronger and fuller.

2. Vegamour GRO Advanced Shampoo – Best for Fine Hair

The Vegamour GRO Advanced line uses vegan micro-encapsulated b-SILK™ protein and phyto-actives to strengthen follicles. Ideal for those with fine or fragile hair, it nourishes roots and supports the natural growth cycle. It’s also safe for color-treated hair, helping improve shine and texture over time.

3. Pura D’Or Original Gold Label Anti-Thinning Shampoo – Best for Everyday Use

This plant-based formula includes biotin, argan oil, and nettle extract to help minimize hair thinning and boost volume. It’s gentle enough for daily use and provides consistent results when used two to three times a week. The lightweight shampoo lathers well and supports balanced hydration without buildup.

4. Nioxin System 2 Cleanser – Best for Noticeable Hair Thinning

Formulated for progressive thinning hair, Nioxin’s System 2 works to cleanse and energize the scalp. Its refreshing peppermint-based formula improves microcirculation, leaving a cooling effect that helps hair feel thicker and more resilient with consistent use.

5. Briogeo Blossom & Bloom Ginseng + Biotin Shampoo – Best for Volumizing and Shine

This clean, sulfate-free shampoo uses ginseng, biotin, and maltodextrin to create volume while promoting healthy hair. It’s great for users who want immediate body and lift, along with long-term hair health benefits. The formula is lightweight, vegan, and ideal for those avoiding harsh ingredients.

Do Hair Growth Shampoos Work?

Hair growth shampoos are formulated to create the right conditions for stronger, thicker strands. They don’t “add” new follicles, but they can support scalp health and minimize factors that slow natural growth. When used consistently, they help you maintain a healthier scalp, reduce buildup, and improve circulation around follicles.

A board-certified dermatologist will explain that the scalp functions like soil. If it’s inflamed or blocked by excess oil, follicles weaken and strands become fragile. A quality growth shampoo cleans effectively, balances sebum, and preserves hydration so follicles can thrive.

How Hair Growth Shampoos Stimulate Follicles

A hair growth shampoo typically contains botanical and clinically validated ingredients that boost micro-circulation and nutrient delivery. Niacinamide, caffeine, or rosemary oil can energize follicles, while gentle exfoliants remove buildup. 

This combination helps hair stay longer in the active growth phase and reduces hair thinning.

Proven Ingredients for Regrowth (Biotin, Rosemary, Saw Palmetto)

• Biotin supports keratin production, improving elasticity and overall hair feel.

• Rosemary oil is known for improving scalp circulation and has been clinically compared to 2% minoxidil over six months.

• Saw palmetto helps limit DHT, a hormone linked to thinning hair.

Together, these ingredients encourage stronger roots and visibly denser strands when used several times a week.

The Role of Scalp Health and DHT Blocking

Excess DHT can shrink follicles and accelerate hair loss. A shampoo that gently lathers while delivering DHT-blocking ingredients helps interrupt this process. Clean surfaces allow nutrients to reach follicles more easily, promoting a balanced environment for hair growth.

Can Shampoo Alone Regrow Hair?

No, shampoo can regrow hair where follicles no longer exist, but a consistent regimen with a sulfate-free, nutrient-dense formula can reduce hair shedding and improve fullness. Realistic expectations are key: visible results usually appear after three to six months of continued use.

Best Chemical-Free Shampoo for Hair Growth and Thickness

A sulfate-free formula keeps your scalp barrier intact. Harsh surfactants strip protective oils, leading to dryness or irritation. Choosing a gentle cleanser that maintains hydration, supports a healthier scalp, and improves tolerance for long-term use.

1. RootMD DHT-Blocking Shampoo – Best Overall for Scalp and Hair Health

2. Vegamour GRO Advanced Shampoo – Best Vegan Option

3. Briogeo Blossom & Bloom Ginseng + Biotin Shampoo – Best for Volume and Shine

Best Shampoo for Hair Growth for Women and Men

Both men and women experience hair thinning, but the causes can differ. Women often notice hair shedding from stress or hormonal shifts, while men deal with DHT sensitivity. A balanced formula with rosemary, peppermint, and niacinamide benefits all genders by calming irritation and stimulating micro-circulation.

1. RootMD DHT-Blocking Shampoo – Best for All Hair Types

2. Pura D’Or Original Gold Label Anti-Thinning Shampoo – Best for Daily Use

3. Nioxin System 2 Cleanser – Best for Advanced Thinning

Key Ingredients for Hair Growth – What to Seek and Avoid

Seek:

• Natural oils (rosemary, jojoba, sunflower) for moisture and barrier repair.

• DHT-blockers such as saw palmetto and caffeine.

• Antioxidants like vitamin E can help fight scalp stress.

Avoid:

• Harsh sulfates and parabens irritate the scalp.

• Heavy silicones that coat and weigh hair down.

• Synthetic fragrance if you have sensitivity.

A minimalist formula respects follicle biology and keeps your hair health on track.

How to Use Hair Growth Shampoo Effectively

Consistency determines success. Use your shampoo to help hair grow two to three times a week, depending on scalp condition. Massage gently to improve circulation and allow actives to absorb for one to two minutes before rinsing.

How Often to Use and Application Tips

• Use lukewarm water; hot water can dehydrate the scalp.

• Apply a small amount – focus on the scalp rather than the lengths.

• Let the shampoo rest briefly before rinsing so nutrients can act.

• Follow with a light conditioner or serum if needed for hydration.

These steps help your shampoo perform at its best and maintain a healthier scalp.

When You’ll Notice Visible Results

Most people observe measurable improvements in hair feel and reduced hair shedding after 8 – 12 weeks. Growth continues gradually, with fuller density visible around the six-month mark when used regularly.

Boosting Hair Growth Beyond Shampoo

A shampoo to help hair grow works best when combined with complementary care. Incorporate balanced nutrition, stress management, and scalp treatments to sustain progress.

Combine Shampoo with Serums, Oils, and Nutrition

Serums enriched with peptides or niacinamide boost the benefits of growth shampoos. Lightweight oils – such as rosemary or jojoba – nourish the scalp barrier. Adequate protein and iron intake further strengthen hair and prevent brittle ends.

How RootMD’s Regrowth Routine Enhances Results

RootMD formulas, developed with input from Dr. Ross Kopelman, combine clean botanicals and dermatologist expertise. Our shampoos and serums are sulfate-free, designed to support scalp health and maintain color safety for color-treated hair. This balanced approach encourages healthy hair without harsh chemicals.

Track Progress and Adjust Your Routine

Keep a simple photo log every four weeks. Noticing subtle improvements in thickness or shine confirms progress and keeps you motivated. If results plateau, alternate between clarifying and hydrating formulas to rebalance your scalp.

Maintain Scalp Balance and Strengthen Follicles

Healthy follicles thrive in a clean, oxygenated environment. Gentle exfoliation once a week removes dead skin and excess oil. Regular scalp massages increase blood flow and help distribute natural oils evenly, resulting in healthier scalp conditions for continuous hair growth.

When to Consult a Hair Specialist

If excessive hair shedding or bald patches appear, it’s best to see a board-certified dermatologist who specializes in hair and scalp disorders. Early evaluation prevents chronic damage and ensures the right treatment strategy for your specific condition.